Pump nozzle

ABSTRACT

A pump nozzle for a pump, the pump nozzle includes a plunger, a connecting rod, a compression bar, a bushing, a cylinder, and a spring. The cylinder is fixedly attached to the bushing and is equipped with a paddle. When the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder. When the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw liquid , fluidic or gaseous content into the cylinder.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims priority to Chinese Patent Application No. 201610016197.7, filed Jan. 11, 2016 (Chinese Patent Application Publication No. CN105644918A, published Jun. 8, 2016), the entire disclosure of which is hereby incorporated by reference herein.

BACKGROUND

Field

The present invention relates to pumps and in particular an environment-friendly pump nozzle.

Related Art

A pump is a machine for boosting pressure of a liquid or gas, causing it to be transported or flow. A pump is a device for moving liquids, gases, or special fluidic media, i.e., a machine to apply work on liquids. Pumps are mainly used to transport liquids, including water, oil, acid and alkali liquids, essences, emulsions, suspended emulsions, and liquid metals, etc., but may also transport liquid and gas mixtures, and liquids containing suspended solids.

Known pumps used with bottles or vacuum bottles containing cosmetic products or consumer chemical products contain steel balls that may cause contamination to the products. In addition, known pump nozzles are difficult to recycle and contain steel balls. The steel balls traditionally used are not recycled after assembly due to high recycling costs, thereby increasing environmental burden. The production of steel balls has an excessively high energy-consumption and insufficient production yield stability.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is illustrated by way of example and is not limited by the accompanying figures, in which like references indicate similar elements. Elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale.

FIG. 1 is a schematic structural view of a pump nozzle.

FIG. 2 is a top view of a plunger of the pump nozzle.

FIG. 3 is an isometric view of the plunger.

FIG. 4 is a side view of the plunger.

FIG. 5 is a bottom view of a connecting rod of the pump nozzle.

FIG. 6 is a side view of the connecting rod.

FIG. 7 is a top view of the connecting rod.

FIG. 8 is a bottom view of a compression bar of the pump nozzle.

FIG. 9 is a side view of the compression bar.

FIG. 10 is a bottom view of a bushing of the pump nozzle.

FIG. 11 is a side view of the bushing.

FIG. 12 is a bottom view of a cylinder of the pump nozzle.

FIG. 13 is a side view of the cylinder.

FIG. 14 is a bottom view of a paddle of the pump nozzle.

FIG. 15 is a side view of the paddle.

DETAILED DESCRIPTION

The present invention is to provide a pump nozzle to address the aforementioned problems encountered in the background art.

In reference to the embodiment drawing of the present invention, the following is a clear and complete description of the technical schemes for embodiments of the present invention. The embodiments described are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments achieved without creative work by ordinary persons skilled in the art are within the scope of the present invention.

FIG. 1 is a schematic structural view of the pump nozzle for a pump. In an embodiment of the present invention, the pump nozzle includes a plunger 1, a connecting rod 2, an upper compression bar (hereinafter “compression bar”) 3, a bushing 4, a cylinder 5, a paddle 6, and a spring 7. The compression bar 3 is placed in the cylinder 5 and goes through the bushing 4. The spring 7 is placed between the compression bar 3 and the bushing 4. The plunger 1 is placed over the compression bar 3 and is located below and fixedly attached to the bushing 4. The connecting rod 2 is fitted into a bottom end of the compression bar 3. The cylinder 5 is fixedly attached to the bushing 4. The cylinder 5 is equipped with the paddle 6.

FIG. 2 is a top view of the plunger 1.

FIG. 3 is an isometric view of the plunger 1.

FIG. 4 is a side view of the plunger 1.

FIG. 5 is a bottom view of the connecting rod 2.

FIG. 6 is a side view of the connecting rod 2.

FIG. 7 is a top view of the connecting rod 2.

FIG. 8 is a bottom view of the compression bar 3.

FIG. 9 is a side view of the compression bar 3.

FIG. 10 is a bottom view of the bushing 4.

FIG. 11 is a side view of the bushing 4.

FIG. 12 is a bottom view of the cylinder 5.

FIG. 13 is a side view of the cylinder 5.

FIG. 14 is a bottom view of the paddle 6.

FIG. 15 is a side view of the paddle 6.

The pump nozzle employs a pneumatic principle. When the compression bar 3 is pressed downward, the spring 7 is compressed, a valve between the plunger 1 and the compression bar 3 opens, and the paddle 6 stays put to seal a bottom of the cylinder 5. When the compression bar 3 is released and allowed to bounce back, a valve between the plunger 1 and the compression bar 3 closes, causing suction by negative pressure to raise the paddle 6 up and draw liquid or fluidic content into the cylinder 5. When this action is repeated, discharge of the content in the cylinder 5 is accomplished by expelling it through the opened valve and a hole in the compression bar 3. The compression bar 3 and the connecting rod 2 is fitted together with a disengaging force greater than 7-10 kg, and may not be disengaged; otherwise, the suction of the pump core will not be generated, and the function is lost.

The plunger 1, when pressed downward, causes suction by negative pressure to draw out the liquid or fluidic content from a bottle. The paddle 6 replaces a steel ball traditionally used, which functions as a check valve to prevent the content that was sucked into the cylinder 5 from flowing back into the bottle. The paddle 6 is elastic, which, once assembled, will apply an elastic force onto a beveled surface of the cylinder 5 to prevent the content from flowing back, and, when the pump is placed horizontally, will not have the sliding action of a steel ball traditionally used when a spring is not employed. In one embodiment, the paddle 6 is made of plastic. The stability of the paddle 6, in addition with improved quality of plastics as a result of changes in their molecular structures, will have better strength and elasticity, alleviating past issues such as insufficient rigidity of polypropylene materials and poor products caused by easiness of elastic fatigue.

Replacing the steel ball with paddle 6 is beneficial in saving energy. When recycled, a person only needs to remove the spring 7 from the compression bar 3 to recycle the plastics. In one embodiment, the spring 7 is metallic. Advantageously, the spring 7 and the compression bar 3 can be easily separated. Unlike a steel ball, which causes contamination and deterioration of the content, the paddle 6 will not mix with the content and will not contaminate the content.

The pump nozzle is mainly used with consumer chemical products, cosmetics, and vacuum bottles with contents including essences, emulsions, and liquids.

A pump nozzle comprises the plunger 1, the connecting rod 2, the compression bar 3, the bushing 4, the cylinder 5, and the spring 7. The compression bar 3 is placed in the cylinder 5 and goes through the bushing 4. The spring 7 is placed between the compression bar 3 and the bushing 4. The plunger 1 is placed over the compression bar 3 and located below and fixedly attached to the bushing 4. The connecting rod 2 is placed at a bottom end of the compression bar 3. The cylinder 5 is fixedly attached to the bushing 4. When the compression bar 3 is pressed downward, the spring 7 is compressed, a valve between the plunger 1 and the compression bar 3 opens, and the paddle 6 stays put to seal the bottom of the cylinder 5. When the compression bar 3 is released and allowed to bounce back, the valve between the plunger 1 and the compression bar 3 closes, causing suction by negative pressure to raise the paddle 6 up and draw the liquid or fluidic content into the cylinder 5.

In another embodiment of the pump nozzle, the connecting rod 2 is fitted into the bottom end of the compression bar 3.

In yet another embodiment of the pump nozzle, the disengaging force between the compression bar 3 and the connecting rod 2 is greater than 7-10 kg.

In still another embodiment of the pump nozzle, said paddle 6 is elastic.

Compared with known nozzles, the beneficial effects of the pump nozzle in accordance with the invention are: avoiding disadvantages of the steel balls traditionally used; using plastic materials instead which are better at saving energy and being environment friendly; locating the spring 7 outside of the cylinder 5 by design, which eliminates quality deterioration due to contamination; recyclable, with high efficiency, and having an improved production yield to avoid wasting of resources.

By using plastic materials, the present invention avoids disadvantages of the steel balls traditionally used, and therefore is better at saving energy; being environment friendly, recyclable, and with high efficiency; having an improved production yield and avoiding wasting of resources.

The term “configured to” describes hardware, software or a combination of hardware and software that is adapted to, set up, arranged, built, composed, constructed, designed or that has any combination of these characteristics to carry out a given function. The term “adapted to” describes hardware, software or a combination of hardware and software that is capable of, able to accommodate, to make, or that is suitable to carry out a given function.

The terms “a” or “an”, as used herein, are defined as one or more than one. Also, the use of introductory phrases such as “at least one” and “one or more” in the claims should not be construed to imply that the introduction of another claim element by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim element to inventions containing only one such element, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an”. The same holds true for the use of definite articles. Unless stated otherwise, terms such as “first” and “second” are used to arbitrarily distinguish between the elements such terms describe. Thus, these terms are not necessarily intended to indicate temporal or other prioritization of such elements. Moreover, the terms “front”, “back”, “top”, “bottom”, “over”, “under”, and the like, in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

The Detailed Description section, and not the Abstract section, is intended to be used to interpret the claims. The Abstract section may set forth one or more but not all embodiments of the invention, and the Abstract section is not intended to limit the invention or the claims in any way.

Note that the term “couple” has been used to denote that one or more additional elements may be interposed between two elements that are coupled. The term “coupled”, as used herein, is defined as “connected”, and encompasses the coupling of devices that may be physically, electrically or communicatively connected (according to context), although the coupling may not necessarily be directly, and not necessarily be mechanically. The term “coupled”, as used herein, is not intended to be limited to a direct coupling or a mechanical coupling, and that one or more additional elements may be interposed between two elements that are coupled.

Although the invention is described herein with reference to specific embodiments, various modifications and changes can be made without departing from the scope of the present invention as set forth in the claims below. Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of the present invention. Any benefits, advantages or solutions to problems that are described herein with regard to specific embodiments are not intended to be construed as a critical, required, or essential feature or element of any or all the claims. 

What is claimed is:
 1. A pump nozzle comprising: a plunger; a connecting rod; a compression bar; a bushing; a cylinder; and a spring, wherein the compression bar is in the cylinder and goes through the bushing, the spring is between the compression bar and the bushing, the plunger is located over the compression bar and is below and fixedly attached to the bushing, and the cylinder is fixedly attached to the bushing.
 2. The pump nozzle of claim 1, in which the cylinder includes a paddle.
 3. The pump nozzle of claim 2, wherein the paddle is elastic.
 4. The pump nozzle of claim 3, in which the paddle is made of plastic materials.
 5. The pump nozzle of claim 2, in which when the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder.
 6. The pump nozzle of claim 5, in which when the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw fluidic content into the cylinder.
 7. The pump nozzle of claim 1, wherein the connecting rod is fitted into a bottom end of the compression bar.
 8. The pump nozzle of claim 7, in which a disengaging force between the compression bar and the connecting rod is greater than 7-10 kg.
 9. A pump including a pump nozzle, the pump nozzle comprising: a plunger; a connecting rod; a compression bar; a bushing; a cylinder; and a spring, wherein the compression bar is in the cylinder and goes through the bushing, the spring is between the compression bar and the bushing, the plunger is located over the compression bar and is below and fixedly attached to the bushing, and the cylinder is fixedly attached to the bushing.
 10. The pump of claim 9, in which the cylinder includes a paddle.
 11. The pump of claim 10, wherein the paddle is elastic.
 12. The pump of claim 11, in which the paddle is made of plastic materials.
 13. The pump of claim 10, in which when the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder.
 14. The pump of claim 13, in which when the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw liquid content into the cylinder.
 15. The pump of claim 9, wherein the connecting rod is fitted into a bottom end of the compression bar.
 16. The pump of claim 15, in which a disengaging force between the compression bar and the connecting rod is greater than 7-10 kg. 